European Financial Coalition against the Commercial Sexual Exploitation of Children Online (EFC) report by Europols European Cybercrime Centre (EC3) focuses on more than just paid-for online child sex abuse material, which is thought to make up only around 7.5% of the total out there. The bulk of material is currently shared freely between offenders, some of whom are highly sophisticated and tech-savvy, making use of all manner of techniques to cover their tracks.”]